Maternal and Fetal Cardiovascular Responses to Acute High-Intensity Interval and Moderate-Intensity Continuous Training Exercise During Pregnancy: A Randomized Crossover Trial.

Autor:	Wowdzia, Jenna B., Hazell, Tom J., Berg, Emily R. Vanden, Labrecque, Lawrence, Brassard, Patrice, Davenport, Margie H.
Předmět:	CEREBRAL artery physiology EXERCISE tests STATISTICS FETAL heart rate AEROBIC exercises CARDIOVASCULAR system physiology ANALYSIS of variance CARDIOPULMONARY system CARDIOPULMONARY fitness EXERCISE physiology PREGNANT women TREATMENT effectiveness RANDOMIZED controlled trials T-test (Statistics) QUESTIONNAIRES DESCRIPTIVE statistics REPEATED measures design RESEARCH funding POSTERIOR cerebral artery HIGH-intensity interval training CROSSOVER trials PRENATAL care DATA analysis software DATA analysis BLOOD pressure measurement PREGNANCY FETUS
Zdroj:	Sports Medicine; Sep2023, Vol. 53 Issue 9, p1819-1833, 15p
Abstrakt:	Objective: We aimed to compare maternal and fetal cardiovascular responses to an acute bout of high-intensity interval training (HIIT) versus moderate-intensity continuous training (MICT) during pregnancy. Methods: Fifteen women with a singleton pregnancy (27.3 ± 3.5 weeks of gestation, 33 ± 4 years of age) were recruited. Following a peak fitness test, participants engaged in a session of HIIT (10 × 1-min intervals ≥ 90% maximum heart rate [HRmax]) interspersed with 1 min of active recovery) and MICT (30 min at 64–76% HRmax) 48 h apart in random order. Maternal HR, blood pressure, middle (MCAv), and posterior cerebral artery blood velocity (PCAv), as well as respiratory measures were monitored continuously throughout HIIT/MICT. Fetal heart rate, as well as umbilical systolic/diastolic (S/D) ratio, resistive index (RI), and pulsatility index (PI) were assessed immediately before and after exercise. Results: Average maternal heart rate was higher for HIIT (82 ± 5% HRmax) compared with MICT (74 ± 4% HRmax; p < 0.001). During the HIIT session, participants achieved a peak heart rate of 96 ± 5% HRmax (range of 87–105% HRmax). Maternal cerebral blood velocities increased with exercise but was not different between HIIT and MICT for MCAv (p = 0.340) and PCAv (p = 0.142). Fetal heart rate increased during exercise (p = 0.244) but was not different between sessions (HIIT: Δ + 14 ± 7 bpm; MICT: Δ + 10 ± 10 bpm). Metrics of umbilical blood flow decreased with exercise and were not different between exercise sessions (PI: p = 0.707; S/D ratio: p = 0.671; RI: p = 0.792). Fetal bradycardia was not observed, and S/D ratio, RI, and PI remained within normal ranges both before and immediately after all exercise sessions. Conclusions: An acute bout of HIIT exercise consisting of repeated 1-min near-maximal to maximal exertions, as well as MICT exercise is well tolerated by both mother and fetus. Clinical Trial Registration: NCT05369247. [ABSTRACT FROM AUTHOR]
Databáze:	Complementary Index
Externí odkaz:	Zobrazit plný text záznamu Full text from SpringerLink